Video Experimental Relacionado
Updated: Oct 4, 2025
08:40
Millisecond Hydrogen/Deuterium-Exchange Mass Spectrometry for the Study of Alpha-Synuclein Structural Dynamics Under Physiological Conditions
Published on: June 23, 2022
3.1K
Bases moleculares de la unión de moléculas pequeñas a la α-sinucleína
Paul Robustelli1,2, Alain Ibanez-de-Opakua3, Cecily Campbell-Bezat1
1D. E. Shaw Research, New York, New York 10036, United States.
Journal of the American Chemical Society
|February 8, 2022
Resumen
Las simulaciones de dinámica molecular revelan cómo la proteína alfa-sinucleína intrínsecamente desordenada se une al fármaco fasudil. Este enfoque puede permitir el diseño racional de fármacos para enfermedades relacionadas con proteínas desordenadas.
Área de la Ciencia:
- La bioquímica
- Biología computacional
- Farmacología
Sus antecedentes:
- Las proteínas intrínsecamente desordenadas (IDP) carecen de estructuras 3D estables, lo que complica el diseño de fármacos.
- La agregación de alfa-sinucleína está relacionada con la enfermedad de Parkinson.
Objetivo del estudio:
- Comprender las interacciones a nivel atómico entre la alfa-sinucleína y el fármaco fasudil utilizando simulaciones de dinámica molecular (DM).
- Explorar el potencial de las simulaciones de MD para el diseño de medicamentos dirigidos a los desplazados internos.
Principales métodos:
- Simulaciones MD a largo plazo a nivel atómico de fasudil monomérico que se une a la alfa-sinucleína.
- Comparación de los resultados de la simulación con los datos experimentales de desplazamiento químico por RMN.
- Simulaciones adicionales con moléculas pequeñas modificadas para validar las predicciones de unión.
Principales resultados:
- Las simulaciones de MD reprodujeron con precisión los datos conocidos de RMN para la unión alfa-sinucleína-fasudil.
- La unión de Fasudil implicó un traslado dinámico entre las interacciones carga-carga y apilamiento π cerca del extremo C.
- Los experimentos posteriores de RMN confirmaron las afinidades de unión y las características estructurales predichas por las simulaciones de MD.
Conclusiones:
- Las simulaciones de MD proporcionan información a nivel atómico sobre las interacciones IDP-ligando.
- El mecanismo de transporte dinámico es clave para la unión de la alfa-sinucleína con fasudil.
- Las estrategias basadas en MD son prometedoras para el diseño racional de fármacos dirigidos a proteínas intrínsecamente desordenadas en enfermedades como el Parkinson.
Más Videos Relacionados
Videos de Conceptos Relacionados
02:40Ligand Binding Sites
13.9K
Proteins are dynamic macromolecules that carry out a wide variety of essential processes; however, the activities of most proteins depend on their interactions with other molecules or ions, known as ligands.
Protein-ligand interactions are quite specific; even though numerous potential ligands surround a cellular protein at any given time, only a particular ligand can bind to that protein. Moreover, a ligand binds only to a dedicated area on the surface of the protein, known as the...
Protein-ligand interactions are quite specific; even though numerous potential ligands surround a cellular protein at any given time, only a particular ligand can bind to that protein. Moreover, a ligand binds only to a dedicated area on the surface of the protein, known as the...
13.9K
00:49Ligand Binding and Linkage
5.0K
Allosteric proteins have more than one ligand binding site; the binding of a ligand to any of these sites influences the binding of ligands to the other sites. When a protein is allosteric, its binding sites are called coupled or linked. In the case of enzymes, the site that binds to the substrate is known as the active site and the other site is known as the regulatory site. When a ligand binds to the regulatory site, this leads to conformational changes in the protein that can influence...
5.0K
01:49Conserved Binding Sites
4.5K
Many proteins’ biological role depends on their interactions with their ligands, small molecules that bind to specific locations on the protein known as ligand-binding sites. Ligand-binding sites are often conserved among homologous proteins as these sites are critical for protein function.
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally...
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally...
4.5K
01:18Factors Affecting Protein-Drug Binding: Drug-Related Factors
235
Drug binding to proteins is a complex phenomenon influenced by various drug-related factors, each playing a significant role in the interaction between drugs and proteins within the body.
One crucial factor in drug-protein binding is the drug's lipophilicity or its affinity for fat. More lipophilic drugs tend to have higher binding extents. For example, highly lipophilic drugs like cloxacillin exhibit substantial protein binding, with as much as 95% of the drug binding to proteins. In...
One crucial factor in drug-protein binding is the drug's lipophilicity or its affinity for fat. More lipophilic drugs tend to have higher binding extents. For example, highly lipophilic drugs like cloxacillin exhibit substantial protein binding, with as much as 95% of the drug binding to proteins. In...
235
03:03Amyloid Fibrils
10.5K
Amyloid fibrils are aggregates of misfolded proteins. Under most circumstances, misfolded proteins are either refolded by chaperone proteins or degraded by the proteasome. However, in the case of a mutation or a disease, these proteins can accumulate to form large clusters and often further assemble to form elongated fibers, called fibrils.
Amyloid deposits were observed as early as 1639 in the liver and the spleen. In 1854, Rudolph Virchow performed iodine staining,...
Amyloid deposits were observed as early as 1639 in the liver and the spleen. In 1854, Rudolph Virchow performed iodine staining,...
10.5K
01:16Protein-Drug Binding: Mechanism and Kinetics
1.1K
Protein-drug binding refers to the interaction between drugs and proteins within the body. This binding process can occur intracellularly, involving drug interactions with enzymes or receptors within cells, or extracellularly, involving plasma proteins in the blood.
Various forces drive these interactions, including hydrogen bonds, hydrophobic interactions, ionic bonds, electrostatic interactions, and van der Waals forces. These bonds enable drugs to bind to specific sites on proteins,...
Various forces drive these interactions, including hydrogen bonds, hydrophobic interactions, ionic bonds, electrostatic interactions, and van der Waals forces. These bonds enable drugs to bind to specific sites on proteins,...
1.1K